没必要这么复杂
#!/bin/sh
for i in `seq 100 `
do
read var
echo $var >> tempfile.tmp
done
echo "max number is :"`sort -n tempfile.tmp |head -n1 `
echo "min number is :"`sort -rn tempfile.tmp |head -n1 `
echo "sum of all number:"`awk '{ a+=$0}END{ print a}' tempfile.tmp `
rm tempfile.tmp
下面是执行结果(5个数)